Explosion-engine.



N0.-66l,439.. Patented Nov, 6, 1900. A. 8:. E. BDULIER.

EXPLOSION ENGINE.

(Application filed July 14, 1900.!

(Pin Model.) 2 Sheets-Sheet l.

ETERS co. PNOTO-LIYNQ. WASHINGTON a c No. 66!,439. Patented Nov. 6 l9 00A. &. E. BUULIER.

EXPLOSION ENGINE.

(Application fil ed July 14, 1900.\ (No Model.) 2 SheetsSheei 2.

UhllTh TAThZS ALFRED BOULIER AND EUGENE PTET trims.

EOULIER, OF NEUILLY, FRANCE.

EXPLOSION ENGINE.

SPECIFICATION forming part of Letters Patent No. 661,439, dated November6, 1900.

Application filed July 14,1900.

T0 at wit/07a it may concern.-

Be it known that we, ALFRED BOULIER and EUGENE BonLInR, citizens of theRepublic of France, residing at Neuilly'sur'Seine, near Paris, France,have invented certain new and useful Improvements in or Relating toExplosion-Engines, (for which we have applied for Letters Patent inGreat Britain under No. 11,690, dated the 27th day of June, 1900, and inFrance, No. 295,719, dated December 29, 1899,) of which the following isaspecification.

The present invention relates to a motor working on the Otto cycle anddriven by any suitable explosive medium,such as petroleum, spirit, gas,or the like. The motor consists of a single cylindrical structure inwhich operate t-wo pistons having a rectilineal conjugated reciprocatingmovement in opposite directions to each other, the explosive forceaeting at the opposite ends of the cylinder. The explosions are effectedin a special explosionchamber so arranged as to be quite separated fromthe motor-cylinder,being connected with the latter only at therespective ends through heat-insulating connections between theexplosion-chamber and the ends of the cylinder. The distributing-valveand the exhaust-valve, well as the ignition device,are carried by theexplosion-chamber and arranged in the middle portion thereof. Theopening of the valves is eifected from the operative parts of theengine, while their closing is automatically effected by a spring ofsuitable power and tension, so as to insure regularity of action. Thecylinder, in the middle part of which is arranged the crank-shaftsuitably connected with the pistons by means of connectiiigrods, isprovided on the outside with a kind of re ceiver or vessel, with whichit communicates, the object of which is to aid in cooling themotor-cylinder by the driving out of the hot air compressed between thetwo pistons in the cylinder whenever they travel toward each other andsupplying fresh air to the same part when the pistons are travelingoutward,the expulsion of the hotair being elfected in consequence of thecompression produced through the pistons being driven toward each otherby the explosions, such escape of air being free from any oil, whichotherwise would be driven out with it, the air being caught andintercepted owing to the special construction Serial No 23,554. L110model.)

of this part of the apparatus, which will be explained hereinafter,while the admission of fresh air is effected in consequence of thesuction produced by the pistons traveling in opposite directions--t'. e.travelingaway from each other.

The motor is represented in the accompanying drawings, in which- Figurel is a longitudinal or side elevation; Fig. 2, a cross-section on thelineAB of Fig. 1; Fig. 8, a longitudinal section on the lines 0 D and EF of Fig. 2, and Fig. 4 a horizontal section on the line G H of Fig. 3.

The cylinder 5 is provided with two pistons 6 and 7, one at each end andworking in directions contrary to each other, said pistons beingconnected by suitable rods 8 and 9 with the crank-shaft 10, arrangedtransversely xi. e., at right anglesto the longitudinal axis of thecylinder 5 and placed in the central portion of the latter. The cylinder5 is preferablyniade, for the purpose of conveniently arranging andmounting the dilferent parts, of two parts bolted together or otherwisesuit-- ably connected. The ends of the component parts forming the twocylinders are provided with cooling-ribs 12 on those portions mostexposed to the heat of the gases. The ends of the cylinder are closed byface-plates 13 14, applied and held by means of longitudinal bolts 15,which firmly hold together all the parts constituting the cylinder 5.

The crank-shaft 10 is sufficiently prolonged beyond each side of thecylinder 5 to carry on one side the parts for transmitting the movementand on the other the actuating devices for the admission and exhaustvalves,the ignition device, and the fly-wheels 16.

The explosion-chamber which is quite separate from the cylinder 5, isconstituted by an elongated box 17, in the enlarged central portion ofwhich are arranged the adtnissionvalve 18 and exhaust-valve 19,controlling the inlet port or pipe 20 for admitting the explosivemixture and the exhaust-pipe 21 for carrying 011 the gases ofcombustion. The ends of the said box 17 are connected, by means ofheat-insulated connections 22 and 23, to the corresponding ends of thecylinder 5 in such a manner that a comm unication between theexplosive-ohamber, consisting of the box 17, is established with eachend of 2 e1.4ele

the cylinder at each explosion. The box 17 is provided on the outside atsuitable points with ribs 24 to assist the cooling of the said box.

On the central portion of the cylinder 5 is arranged a collector orintercepting vessel 25, through which the hot air com pressed betweenthe two cylinders as they travel toward each other is expelled without,however, any lubricating-oil being driven out at the same time, the hotair being replaced by fresh air entering through the collector duringthe time the pistons are travelingfrom each other. The open bottom ofthe said vessel 25 can be fixed on the cylinder 5 soas to correspondexactly with an opening 26, provided for that purpose in the wall of thecylinder in such a manner that the interior of that part of the cylinderin which the crank-shaft works can communicate with the interior of thevessel 25, in the center of which is provided a cup or inverted cone 27,the bottom of which is provided wit-h an orifice 28, communicating witha tube or passage 29, extending through the side of the vessel 25 andterminating outside in a pipe 30.

The cup 27 is provided with an upright rim 31, over which is arranged aring 34 or part with an inwardly-depending flange in such a manner as tosurround the top of the rim and at the same time leave sufficient spaceto form the annular passages 32 33 between the top of the rim and thering or recessed part,while a ring 34 is screwed onto the upper edge ofthe vessel 25, the upper end 35 of which is covered by a metallic tissueor sieve 36, so as to prevent the entry of impurities with the air.

In consequence of this arrangement the motor-pistons when travelingtoward each other under the effect of an explosion compress the airbetween them in the cylinder 5 and drive it out through the opening 26of the vessel 25, the air being obliged, owing to the obstacles orbaffles it meets with in the cup 27 and the ring 3 L in its passagethrough the vessel, to follow the path indicated by the arrows drawn infull lines, escaping finally through the central opening 35. When,however, the pistons are traveling in the opposite directioni. e.traveling away from each otherthey produce through the opening 26 a verystrong suction in the vessel 25, drawing in the air from the outsidethrough the openings 35, (indicated by the arrows drawn in dottedlines,) which air, thus passing in adirection contrary to that taken bythe hot air which had been expelled, enters the vessel 25 and throughthe orifice 26, the said cylinder 5 thereby greatly assisting in coolingthe latter.

The object of the baffies arranged within the vessel 25 is to preventanylubricating-oil from being carried outside with the hot air drivenout. A large quantity of such oil has to be provided in the centralportion of the 5 cylinder 5, Where the crank-shaft works, and would beliable to be carried away by the hot air driven out by the pistons; butany oil taken up by the hot air strikes first against the lower surfaceof the cup 27 and then the wall of the recess 37 of the ring 34, whereit is deposited and from whence it runs down and falls into the cup 27,passing out through the orifice 28, provided for that purpose, into thepassage 29, and outside pipe 30, by which the collected oil may be ledto any place where it is required. Thus theexpulsion of the air iseffected without any loss of lubricants.

What we claim as our invention, and desire to secure by Letters Patent,is

l. An explosion-motor comprising a cylinder, two pistons in saidcylinder working simultaneously in opposite directions, anexplosion-chamber separated from said cylinder and containing thedevices for the admis' sion and escape of the gases and an ignitiondevice and connections between said explosion-chamber and the ends ofthe cylinder, and an air inlet and outlet vessel on said cylinder andcommunicating with the interior thereof between the pistons, andoil-intercepting devices in said vessel substantially as described.

2. An explosion-motor comprising a substantiallyrlosed cylinder, twopistons in said cylinder, working simultaneously in opposite directions,an air inlet and outlet vessel on said cylinder and communicating withthe interior thereof between the pistons, an oilin tercepting cup insaid vessel and a baffle arranged above and about the rim of said cupsubstantially as described.

3. An explosion-motor comprising a substantially-closed cylinder, twopistons in said cylinder working simultaneously in opposite directions,an explosion-chamber separated from said cylinder and extendinglongitudinally thereof, gas inlet and outlet ports therein andconnections betweenthe ends of the explosion-chamber and the ends of thecylinder for the inlet and outlet of gases and an air inlet and outletvessel on the cylinder and communicating with the interior thereof abovethe crank-shaft and an oil-intercepting device in said vesselsubstantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

ALFRED BOULIER. EUGENE BOULIER.

Witnesses:

LoUIs SULLIGER, EDWARD P. MAGLEAN.

